Bayonet-joint closure



May 20, 1930. Y J; 5. REID BAYONET JOINT CLOSURE Filed Jan. 14. 1929 L mam I N M1 J U 45 231 M9 24 16 3/ If 2 i 14. '4

l0 l 9 I 4 3 fizz J INVENTOR fAM$ J. R510 ATTORNEYS Patented M... 20, 1930 omreo .STATES PATENT OFFICE I JAMES S. REID, OF CLEVELAND, OHIO, ASSIGNOB TO THE EATON AXLE AND SPRING COMPANY, OF CLEVELAND, OHIO, A CORPORATION 01 OHIO BAYONET-JOINT cL'osunE' Application filed January 14, 1929. Serial No. 332,276.

This invention relates to improvements in bayonet-joint closures of the type provided with opposed locking fingers for cooperative engagement .with opposed cam portions of the device having the opening to be closed.

The general object of the present invention is the provision of an improved closure of the type described in which the locking member thereof has exceptionally resilient locking fingers, so that the closure can be easily and qulcklyconnected to and disconnected from the device having the opening to be closed; and which closure is of simple and inexpensive construction with easily assembled parts, so that it can be made and sold at low cost. a

Further objects of the invention are in part obvious and in part will appear more in detail hereinafter.

In the-accompanying drawing, Fig. 1 is a central vertical sectional view of the prescut improved closure detachably connected I to one end of a tubular neck, the view through the closure being 011 the line 1 .1, Fig.2; Fig. 2 is a bottom plan view of the closure; Fig. 3 is a top plan view thereof; Fig. 4 is a central vertical sectional view of the Ql 0-' sure on the lined-4, Fig. 2; Fig. 5 is a top plan view of the neck shown in Fig. 1-; and Fig. 6 is a: central vertical sectional view of said neck on the line 66, Fig. 5.

In the 'presentembodiment of the invention, the device to which the closure is adapted to be connected is a tubular neck which may be an integral part'of a receptacle, such as an automobile radiator or an automobile gasoline tank, or separate therefrom and suitably secured thereto around an o ening thereof. The neckhere illustrated 1s a separate one piece member-and includes a cylindrical body portion 1 provided at its base. with an outwardly extending annular flange 2 for welding or other suitable securement to the receptacle 3 around the opening 4 thereof. Said body portion is provided at its upper end, which is the end to beyclosed, with an inwardly extending annular wall 5 which terminates in a depending flange 6. At two diametrically opposite points, parts of the wall 5 and the flange 6 are cut away, which vided at its high and a tubular inner edge thereof, the outer edgeof said top divides the flange 6tinto two portions and provides two passageways 7 which afi'ord access for the closure locking fingers (to be later described) to the cam surfaces 8 on the 6B thusformed. Each such cam surface is pro' end with a dwell 9. to receive a closure finger when the closure is completely or fully connectedto the neck, and just beyond these dwells, each flange portion'6 is provided with a depending stop projection -10- to limit rotary movement of the closure'locking fingers up along the cam surfaces 8, all as will be readilyunderstood. The present improved closure includes an bottom edges of the twoflange portions 6 upper or outer wall and a lower or inner wall, said walls having their central portions separated to provide an air chamber 15' therebetween. Said upper or outer Wall is a one piece member having a dome-shaped top portion 16 and a comparatively. short depending cylindrical skirt portion 17. The closure lower or inner wall is made up of two members, a central locking member and an outer supporting member therefor.

Said locking member is a substantially fiat, generally circular sheet metal disc 19 providedwith two circumferential slots 20 extending inwardly from the outer edge of the disc in opposite directions and terminating" so beyond the disc center in apertures 21, said apertures being necessary or at least desirable for manufacturin purposes. Said slots provide two eircumerentially extending, 0pposed locking fingers 23 of resilient character, the outer or free ends '24 of which are arched upwardly in cross section and lie. beyond the general boundary of the disc, as best indicated in Fig. 2. To stren hen said fingers, each is provided with a ongitudinally disposed ridge 26 which disappears gradually toward the inner end thereof.

The supporting member, for the locking member is also in one piece and includes a horizontally disposed, annular top portion 30 portionBl depending from the portion being crimped or otherwise suitably secured to the closure outer wall, such as at the junction of the top and skirt portions thereof. Extending from and integral with the bottom edge of the depending portion 31 V of this supportin member are two 0 posed A locking ton es w 'ch are adapted, w en in the dependm position indicated in dotted lines inFig. to be passed through twoopd slots 36 in the marginal portion of t e ocking member 19 and thereafter bent inwardly beneath said locking member, asindicated in full lines in Fig. 4. Said tongues securely hold the marginal portion of the locking member against the bottom ed e of portion 31, without liability of the loc ing tion, said pressed out part 39 is acontinua- 'tion of an upwardly pressed out ridge -40 which extends diametrically across the domebeing prevented shalped top We said ri ge being provided for ornamentalfiurposes, I a

\ e closure is connected to the neck in the usual manner of bayonet-'ointconnections, the pro'ecting ends 24 of the closure locking fingers ing passed down through the neck passageways 7. The closure is then turned in a clockwise direction which causes said finger ends to yieldingly ride up the neck cam surfaces 8 until they reach the dwells 9 thereof, further rotary movement in this direction b the stop projections 10. As said fin er end s travel up said cam surfaces, the ee end portions of the closure fingers move downwardly with respect'to the f central or body portion of the locking memiency of sai her, as clearl indicated in Fig. 1, the resilto be very easily connected to and disconnected from the neck.

To remove the closure from the neck, it is only necessary to turn the closure in a counter-clockwise direction, which causes the finr ends 24 to leave the dwells 9 and ride own the cam surfaces 8 to the passageways 7, whereupon the closure can be readily separated or. removed from the neck.

, In order to provide a seal between the closure and the. neck, the closure is providedwith a yielding "gasket 45 which snugly surrounds the upper end of portion 31 of the closure inner wall and contacts with the.

lower surface of said portion v30. When the closure isconnected to the neck, as shown in Fig. '1, said gasket is compressed between the ortion'16- of theclosure outer fingers permitting. the closure portion 31 is usually snug enough to main tain the gasket inv position, escape of said" gasket is prevented -b clearly indicated in tubular necks having-op osed cam portions adjacent the ends to be c osed, comprising a the finger ends 24' which extend outwa'r ly beyond the inner locking member and a supporting member therefor, said lockingmembe'r comprising a substantially flat sheet metal disc provided with two circumferentially disposed slots extending inwardly from the disc edge in -'opposite directions, thereby forming at the circumference of thedisc two opposed resilient locking fingers, said fingers at their free ends terminating beyond the circular edge of the disc to provide resilient extensions for locking engagement with the opposed cam portions of such-a neck.-

A closure for the ends of tubular necks having opposed cam portions. adjacent the ends to be closed, comprising a-locking mem- .ber and a supporting member therefor, said locking mem er comprising a substantially flat sheet metal disc provided with two circumferentially disposed slots extending inwardlyin opposite directions from the disc edge beyond the disc center, thereby forming at'thecircum'ference of the disc two opposed resilient locking fingers, said fingers at their for locking engagement with the opposed cam portions of such a neck. 3. closure for the ends of tubular necks having opposed cam portions adjacent the ends to be closed, comprising a locking memher and a'supporting member therefor, said 7 'free' ends terminating beyond the circular I edge of the disc to provide'resilient extensions in comparatively small apertures, thereby forming at the clrcumference the disc two opposed resilient locking fingers, said fingers at their free ends terminating beyond the circular edge of the disc to provide resilient extensions for locking engagement with the" opposed cam portions ofsuch a neck. 4. A bayonet-'oint closure for the ends of tubular necks having opposed cam portions adjacent the ends to be closed, comprising-av locking member and a supporting member therefor, said locking member comprising a substantially flat sheet metal disc provided with two circumferentiallydisposed slots extending inwardly from the disc edge in opposite directions, thereby forming at the circumference of the disc two opposed resilient closure portion 30 and the neck wall 5. While locking fingers, said fingers at their-free ends engagement of the gasket with the closure terminating beyond the circular edge of the disc toprovide resilient extensions for locking en agement with the opposed cam portions such a neck, each of said fingers being provided with means integral therewith for strengthening said finger.

5. A bayonet-joint closure 'for the ends of tubular necks having opposed cam portions adjacent the ends to be closed, comprising a locking member and a supporting member therefor, said locking member comprisin a substantially flat sheet metal disc provi ed with two-circumferentially. disposed slots ex tending inwardly from thedisc edge in opposite directions, thereby forming at the circumference of the disc two opposed resilient locking fingers, said fingers at. their free ends terminating beyond the circular edge o'fthe disc to provide resilient extensions for 190king engagement with theopposed cam portions of sucha neck, each of said fingers being provided with longitudinally extending means integral therewith for strengthening said finger.

6. 'A bayonet-joint closure for the ends of tubular necks having opposed cam portions adjacent the ends to be closed, comprising a locking member and a supporting member therefor, said locking member comprising a substantially flat sheet metal disc provided with two circumferentially disposedslots extending inwardly from the disc edge in opposite directions, thereby forming at the circumference of the disc two opposed resilient locking fingers, said fingers at their free ends terminating beyond the circular edge of the disc to provide resilient extensionsfor locking engagement with'the opposed cam portions of such a neck, each of said fingers being provided with a ridge integral therewith for strengthening said finger.

7 A bayonet-joint closure for the ends of tubular necks having opposed cam portions adjacent the ends to be closed, comprising alocking member and a supporting member therefor, said locking member comprising a substantially flat sheet metal disc provided with two circumferentially disposed slots extending inwardly from the disc edge in opposite directions, thereby forming at the'circumference of the disc two opposed resilient locking fingers,'said fingers at their free ends terminating beyond the circular edge of the disc to provide' resilient extensions for-lockin er engagement with the opposed cam portions of such a neck, each of said fingers being provided with .a lon itudinally extending ridge' integral therewith for strengthening said finger.

8. A bayonet-joint closure for the ends of tubular necks having opposed cam portions adjacent the ends to be closed, comprisin a locking member and a supporting mem er therefor, said locking member comprisin a substantially fiat sheet metal disc provl ed with two circumferentially disposed slots extending inwardly from the disc edge in opposite directions, thereby forming at the circumference of the disc two opposed resilient locking fingers,-said fingers at their free ends terminating outwardly beyond the circular edge of the disc to provide resilient extensions for locking engagement with the opposed cam portions of such a neck, said supporting member including two oppositely disposed depending portions, and means for securing said locking member against the lower ends of said depending ortions. 9. A bayonet-joint closure r the ends of tubular necks having opposed cam portions adjacent the ends tobe closed, comprisin a locking member and a su porting memfie'r therefor, said locking mem ber comprising a substantially flat sheet metal disc provided with two circumferentially disposed slots extending inwardly from the disc edge in opposite directions, therebyv forming at the circumference of 'the disc two opposed resilient locking fingers, said fingers at their free ends terminating outwardly beyond the circular edge of the disc to provide resilient extensions for locking engagement'with the opposed cam portions of such a neck, said supporting member including two oppositely disposed depending portions, and means for securing said locking member against the lower ends of said depending portions, said securing means being integral with said depending portions.

10. A bayonet-joint closure for the ends of tubular necks having opposed cam portions adjacent the ends, to be closed, comprisin a locking member and a supporting mem er therefor, said locking member comprlslng a te g. inwardly from the disc edge in opposite directions, thereby forming at the circumference of the disc two opposed resilient locking fingers, said fingers at their free ends terminating outwardly beyond the circular edge of the disc to provide resilient extensions for locking engagement with the opposed cam portions of such a neck, said supporting member including two oppositely arranged depending portions provided at their lower-ends with locking tongues, said locking member being provided with openmgs through which sa d locking tongues are passed, portions of said lockingntongues being bent laterally below said 100 ng member to secure't-he same against the lower ends of said depending portions. v

11. A bayonet-joint closure for the ends of tubular necks having opposed cam portions adjacent-the ends to be closed, comprising a locking member and a supporting member therefor, said lockingmeinber comprising a substantially flat sheet metal disc, provided with two circumferent-ially disposed slots extending inwardly from the'disc edge in opposite directions, thereby forming-at the cirsaid locking member openings being arcumferenceof the disc two opposed resilient ranged 1n a l1ne lymg between the locking locking fingers, said fingers at their free ends fingers f sa1dlock1ng member. terminating outwardly beyond the circular In testimony whereof I hereby aflix my 5 edge of the disc to provide resilient extensignature. 70 sions for looking engagement with the op- JAMES S. REID. posed cam portions of such a'neck, said supportin member including two oppositely arrange depending ortions provi ed at their lower ends with ocking tongues integral I 75 therewith, said locking member bein provided with openings through which said locking tongues are passed, portions of said lockin tongues being bent laterally below said logking member to secure the same against 30 the lower ends of said depending portions.

12. A bayonet-joint closure for the ends of tubular necks having op, osed cam portions adjacent the ends to be c osed, comprisin a v A locking member and a supporting mem er therefor, said locking member comprising a substantially flat sheet metal disc provided with two circumferentially disposed slots extending inwardly from the disc edge inopposite directions, thereby forming at the circumference of the disc two opposed resili ent locking fin ers, said fingers at their free ends terminatm outwardly beyond the circular edge of t e disc to provide resilient o extensions for locking engagement with the 9 opposed cam portions of such a neck, said I supporting member including a cylindrical depending portion provided at its lower end with two opposed locking tongues, said locki l ing' member being rovided with a pair f i openings through w ich said locking tongues extend, portions of said lockin tongues being bent laterally below said 100 ing member to secure said locking member against the 40 lower end of said cylindrical depending por- 105 7 tion.

- 13. A bayonet-joint closure for the ends of tubular necks having op osed cam portions. adjacent the ends to be c osed, comprisin a looking member and a'supporting'mem 1'- y no therefor, .said locking mem er comprisin a substantially flat sheet metal disc provided with two circumferentially disposed slots extending inwardly from the disc edge in oppom site directions, thereby forming at the circumference of the disc two opposed resilient locking fingers, said fingers at their free ends 7 terminating outwardly beyond the circular edge of the disc to provi e resilient extensions for locking engagement with the op-- a v posed cam portions of. such a neck, saidsupporting member includin' a cylindrical .de-

pending'portion provide at 1ts lower end with two opposed locking tongues, said lock- 00 ing member being provided with a pair of openings through w ich said locking tongues extend, ortions of said locking tongues being .bent la erally below said locking member to secure said locking member against the lower no end of said cylindrical: depending po'rtion,- 

